Introduction
The Keeley Mk3 Driver Andy Timmons Full Range Overdrive is a versatile guitar effects pedal designed to provide a wide spectrum of overdrive tones. This pedal integrates a classic blues driver circuit with advanced voicing options, allowing musicians to achieve sounds ranging from clean boost to rich germanium fuzz. It has been optimized to meet the demanding needs of professional recording and touring artists.
Key Features
- Classic Blues Driver Circuit: Incorporates a blues driver circuit enhanced by decades of Keeley's modification expertise.
- Germanium-Based Overdrive: Delivers a unique overdrive character, developed in collaboration with Andy Timmons.
- AT/RK Tone Switch: Offers two distinct tone voicings. The 'AT' setting provides clarity by cutting lows, while the 'RK' setting boosts low-end for a powerful sound.
- AT/RK Drive Switch: Selects between asymmetrical silicon diodes for a standard drive or dual germanium diodes for a smoother, slightly compressed drive with a brighter, more articulate attack.
- Flexible Bypass Modes: Switchable between true-bypass and buffered bypass to suit various rig configurations.
- Premium Components: Utilizes JFET Transistors, Germanium Diodes, and Op-Amp Gain to produce harmonically rich overdrive.
Controls and Functions
Image: Close-up of the Keeley Mk3 Driver's control knobs and switches.
Image: Top-down view of the Keeley Mk3 Driver pedal, showing all controls and jacks.
- Tone Knob: Adjusts the tonal characteristics of the overdrive.
- Drive Knob: Controls the amount of overdrive/gain.
- Level Knob: Sets the overall output volume of the pedal.
- AT/RK Tone Switch: Toggles between two tone voicings: 'AT' for clarity (cuts lows) and 'RK' for boosted low-end.
- AT/RK Drive Switch: Selects between two drive characteristics: asymmetrical silicon diodes or dual germanium diodes.
- Bypass Footswitch: Engages or disengages the effect.
Setup
- Power Connection: Connect a standard 9V DC power supply (center-negative) to the 9VDC input jack on the pedal. Ensure the power supply meets the pedal's requirements.
- Input Connection: Connect your guitar or other instrument to the INPUT jack on the pedal using a standard 1/4-inch instrument cable.
- Output Connection: Connect the OUTPUT jack of the pedal to your amplifier or the next pedal in your signal chain using a standard 1/4-inch instrument cable.
- Bypass Mode Selection: The pedal supports both true-bypass and buffered bypass. Refer to the full manual for instructions on how to switch between these modes, if desired.
Image: Rear view of the Keeley Mk3 Driver pedal, highlighting the input, output, and 9VDC power connections.
Operating Instructions
Once the pedal is properly connected, you can begin exploring its tonal capabilities:
- Engaging the Effect: Press the footswitch to engage the overdrive effect. The LED indicator will illuminate when the effect is active.
- Adjusting Drive: Start with the Drive knob at a low setting and gradually increase it to achieve your desired level of overdrive.
- Shaping Tone: Use the Tone knob to adjust the brightness or warmth of your sound. Experiment with the AT/RK Tone switch to find the optimal frequency response for your playing style.
- Selecting Drive Voicing: The AT/RK Drive switch allows you to choose between two distinct clipping styles. The germanium diode setting offers a smoother, more compressed sound, while the silicon diode setting provides a brighter, more articulate attack.
- Setting Output Level: Adjust the Level knob to match the volume of your bypassed signal or to provide a boost when the effect is engaged.
Maintenance
- Cleaning: Use a soft, dry cloth to clean the pedal's exterior. Avoid using abrasive cleaners or solvents.
- Storage: Store the pedal in a cool, dry place away from direct sunlight and extreme temperatures when not in use.
- Power Supply: Always use a regulated 9V DC center-negative power supply to prevent damage to the unit. Disconnect power when not in use for extended periods.
- Cable Care: Ensure all instrument and power cables are in good condition to prevent signal loss or intermittent operation.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No sound when pedal is engaged. | Incorrect cable connections, faulty power supply, pedal not receiving power. | Check all input/output cables. Verify power supply is connected and functional. Ensure the pedal's LED illuminates when engaged. |
| Weak or distorted sound. | Low battery (if applicable), incorrect knob settings, faulty cables. | Adjust Drive and Level knobs. Check cables for damage. Ensure power supply is adequate. |
| Excessive noise or hum. | Ground loop, interference from other electronics, faulty power supply. | Use an isolated power supply. Ensure proper grounding. Move pedal away from power transformers or fluorescent lights. |
Specifications
- Model: KMk3
- Item Weight: 13.8 ounces
- Product Dimensions: 6.2 x 3.2 x 3.1 inches
- Power Requirement: 9V DC (center-negative, regulated power supply recommended)
- Bypass: Switchable True-Bypass / Buffered Bypass
- Date First Available: March 22, 2024
Warranty and Support
For warranty information and technical support, please refer to the official Keeley Electronics website or contact their customer service directly. Keep your purchase receipt as proof of purchase for any warranty claims.
Keeley Electronics Official Website: Visit the Keeley Store on Amazon
